Problems from Spotify Challenge 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
All Just A Dream 2091 476 23% 0.05 340 243 71% 6.2
Cat Coat Colors 190 84 44% 0.00 80 71 89% 3.6
Imperial Measurement 1888 842 45% 0.00 763 710 93% 2.0
Peer Streaming 51 18 35% 0.04 16 11 69% 7.4
Playlist 372 48 13% 1.09 37 15 41% 9.4
Primary Register 1190 743 62% 0.00 664 616 93% 2.1
Square Pie 392 152 39% 0.07 40 31 78% 6.0
Wheel Game 134 18 13% 0.00 19 15 79% 6.6